Fixes #37797 - ensure PostgreSQL upgrade uses the right locales

hooks/boot/06-postgresql-upgrade-extensions.rb

@@ -12,6 +12,9 @@ def os_needs_postgresql_upgrade?
   def postgresql_upgrade(new_version)
     logger.notice("Performing upgrade of PostgreSQL to #{new_version}")
 
+    start_services(['postgresql'])
+    (_name, _owner, _enconding, collate, ctype, _privileges) = `runuser -l postgres -c 'psql -lt | grep -E "^\s+postgres"'`.chomp.split('|').map(&:strip)
+
     stop_services
 
     logger.notice("Upgrading PostgreSQL packages")
@@ -35,7 +38,7 @@ def postgresql_upgrade(new_version)
     # see https://bugzilla.redhat.com/show_bug.cgi?id=1935301
     execute!("sed -i '/^data_directory/d' /var/lib/pgsql/data/postgresql.conf", false, true)
 
-    execute_as!('postgres', 'postgresql-setup --upgrade', false, true)
+    execute_as!('postgres', "PGSETUP_INITDB_OPTIONS=\"--lc-collate=#{collate} --lc-ctype=#{ctype} --locale=#{collate}\" postgresql-setup --upgrade", false, true)
 
     logger.notice("Analyzing the new PostgreSQL cluster")
 

spec/postgresql_upgrade_hook_context_extension_spec.rb

@@ -36,6 +36,7 @@
       allow(context).to receive(:ensure_packages)
       allow(context).to receive(:stop_services)
       allow(context).to receive(:start_services)
+      allow(context).to receive(:'`').with("runuser -l postgres -c 'psql -lt | grep -E \"^\s+postgres\"'").and_return(' postgres  | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | ')
       allow(logger).to receive(:notice)
     end
 
@@ -57,7 +58,7 @@
 
     it 'runs postgresql-setup --upgrade' do
       expect(subject).to be_nil
-      expect(context).to have_received(:'execute!').with("runuser -l postgres -c 'postgresql-setup --upgrade'", false, true)
+      expect(context).to have_received(:'execute!').with("runuser -l postgres -c 'PGSETUP_INITDB_OPTIONS=\"--lc-collate=en_US.UTF-8 --lc-ctype=en_US.UTF-8 --locale=en_US.UTF-8\" postgresql-setup --upgrade'", false, true)
     end
 
     it 'runs vacuumdb --all --analyze-in-stages' do